From f1979dc1127d5d0317c91a448d253e6940172c9a Mon Sep 17 00:00:00 2001
From: Madeline Busig <madeline.busig@outlook.com>
Date: Thu, 31 Oct 2024 01:05:33 -0700
Subject: [PATCH] Add problem 9 solution

---
 include/p9.h | 14 ++++++++++++++
 src/main.c   | 19 +++++++++++++++++++
 src/p9.c     | 16 ++++++++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 include/p9.h
 create mode 100644 src/p9.c

diff --git a/include/p9.h b/include/p9.h
new file mode 100644
index 0000000..10001a9
--- /dev/null
+++ b/include/p9.h
@@ -0,0 +1,14 @@
+#ifndef P9_H
+#define P9_H
+
+typedef struct {
+	int id;
+	char name[32];
+	double price;
+	int stock;
+} Product;
+
+Product* find_product(Product* products, int num_products, int id);
+
+#endif
+
diff --git a/src/main.c b/src/main.c
index 7576133..f14bc4c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -8,6 +8,7 @@
 #include "p6.h"
 #include "p7.h"
 #include "p8.h"
+#include "p9.h"
 
 void print_int_arr(int* arr, int size) {
 	for (int i = 0; i < size; ++i) {
@@ -95,6 +96,24 @@ int main(void) {
 
 	printf("Average GPA: %.2lf\n", average_gpa);
 
+	// Problem 9
+	printf("Problem 9:\n");
+
+	Product products[4] = {
+		{ 4011, "Banana", 10.0, 1000 },
+		{ 412, "Apple", 2.5, 240 },
+		{ 728, "Pear",  4.8, 180 },
+		{ 119, "Orange", 1.6, 438 },
+	};
+
+	Product* found = find_product(products, 4, 728);
+
+	if (found != NULL) {
+		printf("Found product \"%s\" with id %d\n", found->name, found->id);
+	} else {
+		printf("Did not find any matching products!\n");
+	}
+
 	return 0;
 }
 
diff --git a/src/p9.c b/src/p9.c
new file mode 100644
index 0000000..7ef3bed
--- /dev/null
+++ b/src/p9.c
@@ -0,0 +1,16 @@
+#include "p9.h"
+
+#include <stddef.h>
+
+Product* find_product(Product* products, int num_products, int id) {
+	Product* found = NULL;
+
+	for (int i = 0; i < num_products; ++i) {
+		if (products[i].id == id) {
+			found = &products[i];
+		}
+	}
+
+	return found;
+}
+